<template>
  <div class="login">
    <el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form">
      <h3 class="title">后台管理系统</h3>
      <!-- 账号密码登录 -->
      <el-form-item v-show="!phoneCode" prop="username">
        <el-input v-model="loginForm.username" type="text" auto-complete="off" placeholder="账号">
          <svg-icon slot="prefix" icon-class="user" class="el-input__icon input-icon" />
        </el-input>
      </el-form-item>
      <el-form-item v-show="!phoneCode" prop="password">
        <el-input v-model="loginForm.password" type="password" auto-complete="off" placeholder="密码" @keyup.enter.native="handleLogin">
          <svg-icon slot="prefix" icon-class="password" class="el-input__icon input-icon" />
        </el-input>
      </el-form-item>

      <!-- 验证码登录 -->
      <el-form-item v-show="phoneCode" prop="phone">
        <el-input v-model="loginForm.phone" type="text" auto-complete="off" placeholder="手机号">
          <svg-icon slot="prefix" icon-class="phone" class="el-input__icon input-icon" />
        </el-input>
      </el-form-item>
      <el-form-item v-show="phoneCode" prop="smsCode">
        <el-input v-model="loginForm.smsCode" type="password" placeholder="请输入手机验证码">
          <svg-icon slot="prefix" icon-class="password" class="el-input__icon input-icon" />
          <template slot="append">
            <div class="code_border" @click="getphoneCode(Boolean(phoneNum))">
              <p class="">{{ `${!phoneNum?'发送验证码':phoneNum+'秒内有效'}` }}</p>
            </div>
          </template>
        </el-input>
      </el-form-item>
      <el-form-item v-if="captchaOnOff" prop="code">
        <el-input v-model="loginForm.code" auto-complete="off" placeholder="验证码" style="width: 63%" @keyup.enter.native="handleLogin">
          <svg-icon slot="prefix" icon-class="validCode" class="el-input__icon input-icon" />
        </el-input>
        <div class="login-code">
          <img :src="codeUrl" class="login-code-img" @click="getCode">
        </div>
      </el-form-item>

      <el-checkbox v-model="loginForm.rememberMe" style="margin: 0px 0px 25px 0px">记住密码</el-checkbox>
      <el-form-item style="width: 100%">
        <el-button :loading="loading" size="medium" type="primary" style="width: 100%" @click.native.prevent="handleLogin">
          <span v-if="!loading">登 录</span>
          <span v-else>登 录 中...</span>
        </el-button>
        <div style="margin-top: 10px;">
          <el-button size="medium" type="success" style="width: 100%" @click="phoneCode=!phoneCode;">
            <span> {{ phoneCode? '密码登录':'手机验证码登录' }}</span>
          </el-button>
        </div>

        <div v-if="register" style="float: right">
          <router-link class="link-type" :to="'/register'">立即注册</router-link>
        </div>
      </el-form-item>

    </el-form>
    <!--  底部  -->
    <div class="el-login-footer">
      <!-- <span>Copyright © 2018-2022 RuoYi-Vue-Plus All Rights Reserved.</span> -->
    </div>
  </div>
</template>

<script>
import { getCodeImg, sendSysCode } from '@/api/login'
import Cookies from 'js-cookie'
import { encrypt, decrypt } from '@/utils/jsencrypt'

export default {
  name: 'Login',
  data() {
    return {
      codeUrl: '',
      loginForm: {
        username: '',
        password: '',
        rememberMe: false,
        code: '',
        uuid: '',
        // 验证码登录
        phone: '', // 手机号
        smsCode: '' // 验证码
      },
      loginRules: {
        username: [{ required: true, trigger: 'blur', message: '请输入您的账号' }],
        password: [{ required: true, trigger: 'blur', message: '请输入您的密码' }],
        code: [{ required: true, trigger: 'change', message: '请输入图形验证码' }],
        phone: [{ required: true, trigger: 'change', message: '请输入手机号码' }],
        smsCode: [{ required: true, trigger: 'change', message: '请输入手机验证码' }],
      },
      loading: false,
      // 验证码开关
      captchaOnOff: true,
      // 注册开关
      register: false,
      redirect: undefined,
      // 手机验证码登录
      phoneCode: true,
      // 验证码计时
      phoneNum: 0,
      // 计时器key
      timeoutKey: 1

    }
  },
  watch: {
    $route: {
      handler: function(route) {
        this.redirect = route.query && route.query.redirect
      },
      immediate: true
    }
  },
  created() {
    // 验证码
    this.getCode()
    // cookie
    this.getCookie()
  },
  // 离开时清除计时器
  destroyed() {
    clearInterval(this.timeoutKey)
  },
  methods: {
    getphoneCode(data) {
      this.$set(this.loginRules, 'username', [{ required: false, trigger: 'change', message: '请输入您的账号' }])
      this.$set(this.loginRules, 'password', [{ required: false, trigger: 'change', message: '请输入您的密码' }])
      this.$set(this.loginRules, 'code', [{ required: false, trigger: 'change', message: '请输入图形验证码' }])
      this.$set(this.loginRules, 'phone', [{ required: true, trigger: 'change', message: '请输入手机号码' }])
      this.$set(this.loginRules, 'smsCode', [{ required: false, trigger: 'change', message: '请输入手机验证码' }])

      this.$refs.loginForm.validate(valid => {
        if (valid && this.phoneNum == 0) {
          sendSysCode({phone: this.loginForm.phone}).then(err=>{
            console.log(err)
            if (err.code == 200) {
              this.loginForm.phoncode = ''
              this.phoneNum = 60
              this.timeoutKey = setInterval(() => {
                this.phoneNum--
                if (this.phoneNum < 1) {
                  this.phoneNum = 0
                  clearInterval(this.timeoutKey)
                }
              }, 1000)
            }
          })
        }
      })
    },
    getCode() {
      getCodeImg().then(res => {
        this.captchaOnOff = res.data.captchaOnOff === undefined ? true : res.data.captchaOnOff
        if (this.captchaOnOff) {
          this.codeUrl = 'data:image/gif;base64,' + res.data.img
          this.loginForm.uuid = res.data.uuid
        }
      })
    },
    getCookie() {
      const username = Cookies.get('username')
      const password = Cookies.get('password')
      const rememberMe = Cookies.get('rememberMe')
      this.loginForm = {
        username: username === undefined ? this.loginForm.username : username,
        password: password === undefined ? this.loginForm.password : decrypt(password),
        rememberMe: rememberMe === undefined ? false : Boolean(rememberMe)
      }
    },
    handleLogin() {
      if (this.phoneCode) {
        this.$set(this.loginRules, 'username', [{ required: false, trigger: 'change', message: '请输入您的账号' }])
        this.$set(this.loginRules, 'password', [{ required: false, trigger: 'change', message: '请输入您的密码' }])
        this.$set(this.loginRules, 'code', [{ required: true, trigger: 'change', message: '请输入图形验证码' }])
        this.$set(this.loginRules, 'phone', [{ required: true, trigger: 'change', message: '请输入手机号码' }])
        this.$set(this.loginRules, 'smsCode', [{ required: true, trigger: 'change', message: '请输入手机验证码' }])
      } else {
        this.$set(this.loginRules, 'username', [{ required: true, trigger: 'change', message: '请输入您的账号' }])
        this.$set(this.loginRules, 'password', [{ required: true, trigger: 'change', message: '请输入您的密码' }])
        this.$set(this.loginRules, 'code', [{ required: true, trigger: 'change', message: '请输入图形验证码' }])
        this.$set(this.loginRules, 'phone', [{ required: false, trigger: 'change', message: '请输入手机号码' }])
        this.$set(this.loginRules, 'smsCode', [{ required: false, trigger: 'change', message: '请输入手机验证码' }])
      }
      this.$refs.loginForm.validate(valid => {
        if (valid) {
          this.loginForm.phoneCode = this.phoneCode
          this.loading = true
          if (this.loginForm.rememberMe) {
            Cookies.set('username', this.loginForm.username, { expires: 30 })
            Cookies.set('password', encrypt(this.loginForm.password), { expires: 30 })
            Cookies.set('rememberMe', this.loginForm.rememberMe, { expires: 30 })
          } else {
            Cookies.remove('username')
            Cookies.remove('password')
            Cookies.remove('rememberMe')
          }
          this.$store
            .dispatch('Login', this.loginForm)
            .then(() => {
              this.$router.push({ path: this.redirect || '/' }).catch(() => {})
            })
            .catch((err) => {
              console.log(err, 'err')
              this.loading = false
              if (this.captchaOnOff) {
                this.getCode()
              }
            })
        }
      })
    }
  }
}
</script>

<style rel="stylesheet/scss" lang="scss">
.login {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
  background-color: #459ae7;
  // background-image: url('../assets/images/login-background.jpg');
  background-size: cover;
}
.title {
  margin: 0px auto 30px auto;
  text-align: center;
  color: #707070;
}

.login-form {
  border-radius: 6px;
  background: #ffffff;
  width: 400px;
  padding: 25px 25px 5px 25px;
  .el-input {
    height: 38px;
    input {
      height: 38px;
    }
  }
  .input-icon {
    height: 39px;
    width: 14px;
    margin-left: 2px;
  }
}
.login-tip {
  font-size: 13px;
  text-align: center;
  color: #bfbfbf;
}
.login-code {
  width: 33%;
  height: 38px;
  float: right;
  img {
    cursor: pointer;
    vertical-align: middle;
  }
}
.el-login-footer {
  height: 40px;
  line-height: 40px;
  position: fixed;
  bottom: 0;
  width: 100%;
  text-align: center;
  color: #fff;
  font-family: Arial;
  font-size: 12px;
  letter-spacing: 1px;
}
.login-code-img {
  height: 38px;
}
.code_border{
  cursor: pointer;
  color: #333;
  line-height: 36px;
  height: 36px;
}
</style>
